<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en_US" lang="en_US">
<head>
<meta http-equiv="content-type" content="text/html; charset=UTF-8" />
<title>QueryStringDecoder xref</title>
<link type="text/css" rel="stylesheet" href="../../../../../../stylesheet.css" />
</head>
<body>
<div id="overview"><a href="../../../../../../../api/org/jboss/netty/handler/codec/http/QueryStringDecoder.html">View Javadoc</a></div><pre>

<a class="jxr_linenumber" name="1" href="#1">1</a>   <em class="jxr_comment">/*</em>
<a class="jxr_linenumber" name="2" href="#2">2</a>   <em class="jxr_comment"> * Copyright 2012 The Netty Project</em>
<a class="jxr_linenumber" name="3" href="#3">3</a>   <em class="jxr_comment"> *</em>
<a class="jxr_linenumber" name="4" href="#4">4</a>   <em class="jxr_comment"> * The Netty Project licenses this file to you under the Apache License,</em>
<a class="jxr_linenumber" name="5" href="#5">5</a>   <em class="jxr_comment"> * version 2.0 (the "License"); you may not use this file except in compliance</em>
<a class="jxr_linenumber" name="6" href="#6">6</a>   <em class="jxr_comment"> * with the License. You may obtain a copy of the License at:</em>
<a class="jxr_linenumber" name="7" href="#7">7</a>   <em class="jxr_comment"> *</em>
<a class="jxr_linenumber" name="8" href="#8">8</a>   <em class="jxr_comment"> *   <a href="http://www.apache.org/licenses/LICENSE-2.0" target="alexandria_uri">http://www.apache.org/licenses/LICENSE-2.0</a></em>
<a class="jxr_linenumber" name="9" href="#9">9</a>   <em class="jxr_comment"> *</em>
<a class="jxr_linenumber" name="10" href="#10">10</a>  <em class="jxr_comment"> * Unless required by applicable law or agreed to in writing, software</em>
<a class="jxr_linenumber" name="11" href="#11">11</a>  <em class="jxr_comment"> * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT</em>
<a class="jxr_linenumber" name="12" href="#12">12</a>  <em class="jxr_comment"> * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the</em>
<a class="jxr_linenumber" name="13" href="#13">13</a>  <em class="jxr_comment"> * License for the specific language governing permissions and limitations</em>
<a class="jxr_linenumber" name="14" href="#14">14</a>  <em class="jxr_comment"> * under the License.</em>
<a class="jxr_linenumber" name="15" href="#15">15</a>  <em class="jxr_comment"> */</em>
<a class="jxr_linenumber" name="16" href="#16">16</a>  <strong class="jxr_keyword">package</strong> org.jboss.netty.handler.codec.http;
<a class="jxr_linenumber" name="17" href="#17">17</a>  
<a class="jxr_linenumber" name="18" href="#18">18</a>  <strong class="jxr_keyword">import</strong> org.jboss.netty.util.CharsetUtil;
<a class="jxr_linenumber" name="19" href="#19">19</a>  
<a class="jxr_linenumber" name="20" href="#20">20</a>  <strong class="jxr_keyword">import</strong> java.io.UnsupportedEncodingException;
<a class="jxr_linenumber" name="21" href="#21">21</a>  <strong class="jxr_keyword">import</strong> java.net.URI;
<a class="jxr_linenumber" name="22" href="#22">22</a>  <strong class="jxr_keyword">import</strong> java.net.URLDecoder;
<a class="jxr_linenumber" name="23" href="#23">23</a>  <strong class="jxr_keyword">import</strong> java.nio.charset.Charset;
<a class="jxr_linenumber" name="24" href="#24">24</a>  <strong class="jxr_keyword">import</strong> java.util.ArrayList;
<a class="jxr_linenumber" name="25" href="#25">25</a>  <strong class="jxr_keyword">import</strong> java.util.Collections;
<a class="jxr_linenumber" name="26" href="#26">26</a>  <strong class="jxr_keyword">import</strong> java.util.LinkedHashMap;
<a class="jxr_linenumber" name="27" href="#27">27</a>  <strong class="jxr_keyword">import</strong> java.util.List;
<a class="jxr_linenumber" name="28" href="#28">28</a>  <strong class="jxr_keyword">import</strong> java.util.Map;
<a class="jxr_linenumber" name="29" href="#29">29</a>  
<a class="jxr_linenumber" name="30" href="#30">30</a>  <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="31" href="#31">31</a>  <em class="jxr_javadoccomment"> * Splits an HTTP query string into a path string and key-value parameter pairs.</em>
<a class="jxr_linenumber" name="32" href="#32">32</a>  <em class="jxr_javadoccomment"> * This decoder is for one time use only.  Create a new instance for each URI:</em>
<a class="jxr_linenumber" name="33" href="#33">33</a>  <em class="jxr_javadoccomment"> * &lt;pre&gt;</em>
<a class="jxr_linenumber" name="34" href="#34">34</a>  <em class="jxr_javadoccomment"> * {@link QueryStringDecoder} decoder = new {@link QueryStringDecoder}("/hello?recipient=world&amp;x=1;y=2");</em>
<a class="jxr_linenumber" name="35" href="#35">35</a>  <em class="jxr_javadoccomment"> * assert decoder.getPath().equals("/hello");</em>
<a class="jxr_linenumber" name="36" href="#36">36</a>  <em class="jxr_javadoccomment"> * assert decoder.getParameters().get("recipient").get(0).equals("world");</em>
<a class="jxr_linenumber" name="37" href="#37">37</a>  <em class="jxr_javadoccomment"> * assert decoder.getParameters().get("x").get(0).equals("1");</em>
<a class="jxr_linenumber" name="38" href="#38">38</a>  <em class="jxr_javadoccomment"> * assert decoder.getParameters().get("y").get(0).equals("2");</em>
<a class="jxr_linenumber" name="39" href="#39">39</a>  <em class="jxr_javadoccomment"> * &lt;/pre&gt;</em>
<a class="jxr_linenumber" name="40" href="#40">40</a>  <em class="jxr_javadoccomment"> *</em>
<a class="jxr_linenumber" name="41" href="#41">41</a>  <em class="jxr_javadoccomment"> * This decoder can also decode the content of an HTTP POST request whose</em>
<a class="jxr_linenumber" name="42" href="#42">42</a>  <em class="jxr_javadoccomment"> * content type is &lt;tt&gt;application/x-www-form-urlencoded&lt;/tt&gt;:</em>
<a class="jxr_linenumber" name="43" href="#43">43</a>  <em class="jxr_javadoccomment"> * &lt;pre&gt;</em>
<a class="jxr_linenumber" name="44" href="#44">44</a>  <em class="jxr_javadoccomment"> * {@link QueryStringDecoder} decoder = new {@link QueryStringDecoder}("recipient=world&amp;x=1;y=2", false);</em>
<a class="jxr_linenumber" name="45" href="#45">45</a>  <em class="jxr_javadoccomment"> * ...</em>
<a class="jxr_linenumber" name="46" href="#46">46</a>  <em class="jxr_javadoccomment"> * &lt;/pre&gt;</em>
<a class="jxr_linenumber" name="47" href="#47">47</a>  <em class="jxr_javadoccomment"> *</em>
<a class="jxr_linenumber" name="48" href="#48">48</a>  <em class="jxr_javadoccomment"> * &lt;h3&gt;HashDOS vulnerability fix&lt;/h3&gt;</em>
<a class="jxr_linenumber" name="49" href="#49">49</a>  <em class="jxr_javadoccomment"> *</em>
<a class="jxr_linenumber" name="50" href="#50">50</a>  <em class="jxr_javadoccomment"> * As a workaround to the &lt;a href="<a href="http://netty.io/s/hashdos" target="alexandria_uri">http://netty.io/s/hashdos</a>"&gt;HashDOS&lt;/a&gt; vulnerability, the decoder</em>
<a class="jxr_linenumber" name="51" href="#51">51</a>  <em class="jxr_javadoccomment"> * limits the maximum number of decoded key-value parameter pairs, up to {@literal 1024} by</em>
<a class="jxr_linenumber" name="52" href="#52">52</a>  <em class="jxr_javadoccomment"> * default, and you can configure it when you construct the decoder by passing an additional</em>
<a class="jxr_linenumber" name="53" href="#53">53</a>  <em class="jxr_javadoccomment"> * integer parameter.</em>
<a class="jxr_linenumber" name="54" href="#54">54</a>  <em class="jxr_javadoccomment"> *</em>
<a class="jxr_linenumber" name="55" href="#55">55</a>  <em class="jxr_javadoccomment"> * @see QueryStringEncoder</em>
<a class="jxr_linenumber" name="56" href="#56">56</a>  <em class="jxr_javadoccomment"> *</em>
<a class="jxr_linenumber" name="57" href="#57">57</a>  <em class="jxr_javadoccomment"> * @apiviz.stereotype utility</em>
<a class="jxr_linenumber" name="58" href="#58">58</a>  <em class="jxr_javadoccomment"> * @apiviz.has        org.jboss.netty.handler.codec.http.HttpRequest oneway - - decodes</em>
<a class="jxr_linenumber" name="59" href="#59">59</a>  <em class="jxr_javadoccomment"> */</em>
<a class="jxr_linenumber" name="60" href="#60">60</a>  <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../../../org/jboss/netty/handler/codec/http/QueryStringDecoder.html">QueryStringDecoder</a> {
<a class="jxr_linenumber" name="61" href="#61">61</a>  
<a class="jxr_linenumber" name="62" href="#62">62</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> DEFAULT_MAX_PARAMS = 1024;
<a class="jxr_linenumber" name="63" href="#63">63</a>  
<a class="jxr_linenumber" name="64" href="#64">64</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> Charset charset;
<a class="jxr_linenumber" name="65" href="#65">65</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> String uri;
<a class="jxr_linenumber" name="66" href="#66">66</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">boolean</strong> hasPath;
<a class="jxr_linenumber" name="67" href="#67">67</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> maxParams;
<a class="jxr_linenumber" name="68" href="#68">68</a>      <strong class="jxr_keyword">private</strong> String path;
<a class="jxr_linenumber" name="69" href="#69">69</a>      <strong class="jxr_keyword">private</strong> Map&lt;String, List&lt;String&gt;&gt; params;
<a class="jxr_linenumber" name="70" href="#70">70</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">int</strong> nParams;
<a class="jxr_linenumber" name="71" href="#71">71</a>  
<a class="jxr_linenumber" name="72" href="#72">72</a>      <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="73" href="#73">73</a>  <em class="jxr_javadoccomment">     * Creates a new decoder that decodes the specified URI. The decoder will</em>
<a class="jxr_linenumber" name="74" href="#74">74</a>  <em class="jxr_javadoccomment">     * assume that the query string is encoded in UTF-8.</em>
<a class="jxr_linenumber" name="75" href="#75">75</a>  <em class="jxr_javadoccomment">     */</em>
<a class="jxr_linenumber" name="76" href="#76">76</a>      <strong class="jxr_keyword">public</strong> <a href="../../../../../../org/jboss/netty/handler/codec/http/QueryStringDecoder.html">QueryStringDecoder</a>(String uri) {
<a class="jxr_linenumber" name="77" href="#77">77</a>          <strong class="jxr_keyword">this</strong>(uri, HttpConstants.DEFAULT_CHARSET);
<a class="jxr_linenumber" name="78" href="#78">78</a>      }
<a class="jxr_linenumber" name="79" href="#79">79</a>  
<a class="jxr_linenumber" name="80" href="#80">80</a>      <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="81" href="#81">81</a>  <em class="jxr_javadoccomment">     * Creates a new decoder that decodes the specified URI encoded in the</em>
<a class="jxr_linenumber" name="82" href="#82">82</a>  <em class="jxr_javadoccomment">     * specified charset.</em>
<a class="jxr_linenumber" name="83" href="#83">83</a>  <em class="jxr_javadoccomment">     */</em>
<a class="jxr_linenumber" name="84" href="#84">84</a>      <strong class="jxr_keyword">public</strong> <a href="../../../../../../org/jboss/netty/handler/codec/http/QueryStringDecoder.html">QueryStringDecoder</a>(String uri, <strong class="jxr_keyword">boolean</strong> hasPath) {
<a class="jxr_linenumber" name="85" href="#85">85</a>          <strong class="jxr_keyword">this</strong>(uri, HttpConstants.DEFAULT_CHARSET, hasPath);
<a class="jxr_linenumber" name="86" href="#86">86</a>      }
<a class="jxr_linenumber" name="87" href="#87">87</a>  
<a class="jxr_linenumber" name="88" href="#88">88</a>      <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="89" href="#89">89</a>  <em class="jxr_javadoccomment">     * Creates a new decoder that decodes the specified URI encoded in the</em>
<a class="jxr_linenumber" name="90" href="#90">90</a>  <em class="jxr_javadoccomment">     * specified charset.</em>
<a class="jxr_linenumber" name="91" href="#91">91</a>  <em class="jxr_javadoccomment">     */</em>
<a class="jxr_linenumber" name="92" href="#92">92</a>      <strong class="jxr_keyword">public</strong> <a href="../../../../../../org/jboss/netty/handler/codec/http/QueryStringDecoder.html">QueryStringDecoder</a>(String uri, Charset charset) {
<a class="jxr_linenumber" name="93" href="#93">93</a>          <strong class="jxr_keyword">this</strong>(uri, charset, <strong class="jxr_keyword">true</strong>);
<a class="jxr_linenumber" name="94" href="#94">94</a>      }
<a class="jxr_linenumber" name="95" href="#95">95</a>  
<a class="jxr_linenumber" name="96" href="#96">96</a>      <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="97" href="#97">97</a>  <em class="jxr_javadoccomment">     * Creates a new decoder that decodes the specified URI encoded in the</em>
<a class="jxr_linenumber" name="98" href="#98">98</a>  <em class="jxr_javadoccomment">     * specified charset.</em>
<a class="jxr_linenumber" name="99" href="#99">99</a>  <em class="jxr_javadoccomment">     */</em>
<a class="jxr_linenumber" name="100" href="#100">100</a>     <strong class="jxr_keyword">public</strong> <a href="../../../../../../org/jboss/netty/handler/codec/http/QueryStringDecoder.html">QueryStringDecoder</a>(String uri, Charset charset, <strong class="jxr_keyword">boolean</strong> hasPath) {
<a class="jxr_linenumber" name="101" href="#101">101</a>         <strong class="jxr_keyword">this</strong>(uri, charset, hasPath, DEFAULT_MAX_PARAMS);
<a class="jxr_linenumber" name="102" href="#102">102</a>     }
<a class="jxr_linenumber" name="103" href="#103">103</a> 
<a class="jxr_linenumber" name="104" href="#104">104</a>     <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="105" href="#105">105</a> <em class="jxr_javadoccomment">     * Creates a new decoder that decodes the specified URI encoded in the</em>
<a class="jxr_linenumber" name="106" href="#106">106</a> <em class="jxr_javadoccomment">     * specified charset.</em>
<a class="jxr_linenumber" name="107" href="#107">107</a> <em class="jxr_javadoccomment">     */</em>
<a class="jxr_linenumber" name="108" href="#108">108</a>     <strong class="jxr_keyword">public</strong> <a href="../../../../../../org/jboss/netty/handler/codec/http/QueryStringDecoder.html">QueryStringDecoder</a>(String uri, Charset charset, <strong class="jxr_keyword">boolean</strong> hasPath, <strong class="jxr_keyword">int</strong> maxParams) {
<a class="jxr_linenumber" name="109" href="#109">109</a>         <strong class="jxr_keyword">if</strong> (uri == <strong class="jxr_keyword">null</strong>) {
<a class="jxr_linenumber" name="110" href="#110">110</a>             <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> NullPointerException(<span class="jxr_string">"uri"</span>);
<a class="jxr_linenumber" name="111" href="#111">111</a>         }
<a class="jxr_linenumber" name="112" href="#112">112</a>         <strong class="jxr_keyword">if</strong> (charset == <strong class="jxr_keyword">null</strong>) {
<a class="jxr_linenumber" name="113" href="#113">113</a>             <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> NullPointerException(<span class="jxr_string">"charset"</span>);
<a class="jxr_linenumber" name="114" href="#114">114</a>         }
<a class="jxr_linenumber" name="115" href="#115">115</a>         <strong class="jxr_keyword">if</strong> (maxParams &lt;= 0) {
<a class="jxr_linenumber" name="116" href="#116">116</a>             <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalArgumentException(
<a class="jxr_linenumber" name="117" href="#117">117</a>                     <span class="jxr_string">"maxParams: "</span> + maxParams + <span class="jxr_string">" (expected: a positive integer)"</span>);
<a class="jxr_linenumber" name="118" href="#118">118</a>         }
<a class="jxr_linenumber" name="119" href="#119">119</a> 
<a class="jxr_linenumber" name="120" href="#120">120</a>         <strong class="jxr_keyword">this</strong>.uri = uri;
<a class="jxr_linenumber" name="121" href="#121">121</a>         <strong class="jxr_keyword">this</strong>.charset = charset;
<a class="jxr_linenumber" name="122" href="#122">122</a>         <strong class="jxr_keyword">this</strong>.maxParams = maxParams;
<a class="jxr_linenumber" name="123" href="#123">123</a>         <strong class="jxr_keyword">this</strong>.hasPath = hasPath;
<a class="jxr_linenumber" name="124" href="#124">124</a>     }
<a class="jxr_linenumber" name="125" href="#125">125</a> 
<a class="jxr_linenumber" name="126" href="#126">126</a>     <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="127" href="#127">127</a> <em class="jxr_javadoccomment">     * Creates a new decoder that decodes the specified URI. The decoder will</em>
<a class="jxr_linenumber" name="128" href="#128">128</a> <em class="jxr_javadoccomment">     * assume that the query string is encoded in UTF-8.</em>
<a class="jxr_linenumber" name="129" href="#129">129</a> <em class="jxr_javadoccomment">     */</em>
<a class="jxr_linenumber" name="130" href="#130">130</a>     <strong class="jxr_keyword">public</strong> <a href="../../../../../../org/jboss/netty/handler/codec/http/QueryStringDecoder.html">QueryStringDecoder</a>(URI uri) {
<a class="jxr_linenumber" name="131" href="#131">131</a>         <strong class="jxr_keyword">this</strong>(uri, HttpConstants.DEFAULT_CHARSET);
<a class="jxr_linenumber" name="132" href="#132">132</a>     }
<a class="jxr_linenumber" name="133" href="#133">133</a> 
<a class="jxr_linenumber" name="134" href="#134">134</a>     <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="135" href="#135">135</a> <em class="jxr_javadoccomment">     * Creates a new decoder that decodes the specified URI encoded in the</em>
<a class="jxr_linenumber" name="136" href="#136">136</a> <em class="jxr_javadoccomment">     * specified charset.</em>
<a class="jxr_linenumber" name="137" href="#137">137</a> <em class="jxr_javadoccomment">     */</em>
<a class="jxr_linenumber" name="138" href="#138">138</a>     <strong class="jxr_keyword">public</strong> <a href="../../../../../../org/jboss/netty/handler/codec/http/QueryStringDecoder.html">QueryStringDecoder</a>(URI uri, Charset charset) {
<a class="jxr_linenumber" name="139" href="#139">139</a>         <strong class="jxr_keyword">this</strong>(uri, charset, DEFAULT_MAX_PARAMS);
<a class="jxr_linenumber" name="140" href="#140">140</a>     }
<a class="jxr_linenumber" name="141" href="#141">141</a> 
<a class="jxr_linenumber" name="142" href="#142">142</a>     <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="143" href="#143">143</a> <em class="jxr_javadoccomment">     * Creates a new decoder that decodes the specified URI encoded in the</em>
<a class="jxr_linenumber" name="144" href="#144">144</a> <em class="jxr_javadoccomment">     * specified charset.</em>
<a class="jxr_linenumber" name="145" href="#145">145</a> <em class="jxr_javadoccomment">     */</em>
<a class="jxr_linenumber" name="146" href="#146">146</a>     <strong class="jxr_keyword">public</strong> <a href="../../../../../../org/jboss/netty/handler/codec/http/QueryStringDecoder.html">QueryStringDecoder</a>(URI uri, Charset charset, <strong class="jxr_keyword">int</strong> maxParams) {
<a class="jxr_linenumber" name="147" href="#147">147</a>         <strong class="jxr_keyword">if</strong> (uri == <strong class="jxr_keyword">null</strong>) {
<a class="jxr_linenumber" name="148" href="#148">148</a>             <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> NullPointerException(<span class="jxr_string">"uri"</span>);
<a class="jxr_linenumber" name="149" href="#149">149</a>         }
<a class="jxr_linenumber" name="150" href="#150">150</a>         <strong class="jxr_keyword">if</strong> (charset == <strong class="jxr_keyword">null</strong>) {
<a class="jxr_linenumber" name="151" href="#151">151</a>             <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> NullPointerException(<span class="jxr_string">"charset"</span>);
<a class="jxr_linenumber" name="152" href="#152">152</a>         }
<a class="jxr_linenumber" name="153" href="#153">153</a>         <strong class="jxr_keyword">if</strong> (maxParams &lt;= 0) {
<a class="jxr_linenumber" name="154" href="#154">154</a>             <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalArgumentException(
<a class="jxr_linenumber" name="155" href="#155">155</a>                     <span class="jxr_string">"maxParams: "</span> + maxParams + <span class="jxr_string">" (expected: a positive integer)"</span>);
<a class="jxr_linenumber" name="156" href="#156">156</a>         }
<a class="jxr_linenumber" name="157" href="#157">157</a> 
<a class="jxr_linenumber" name="158" href="#158">158</a>         String rawPath = uri.getRawPath();
<a class="jxr_linenumber" name="159" href="#159">159</a>         <strong class="jxr_keyword">if</strong> (rawPath != <strong class="jxr_keyword">null</strong>) {
<a class="jxr_linenumber" name="160" href="#160">160</a>             hasPath = <strong class="jxr_keyword">true</strong>;
<a class="jxr_linenumber" name="161" href="#161">161</a>         } <strong class="jxr_keyword">else</strong> {
<a class="jxr_linenumber" name="162" href="#162">162</a>             rawPath = <span class="jxr_string">""</span>;
<a class="jxr_linenumber" name="163" href="#163">163</a>             hasPath = false;
<a class="jxr_linenumber" name="164" href="#164">164</a>         }
<a class="jxr_linenumber" name="165" href="#165">165</a>         <em class="jxr_comment">// Also take care of cut of things like "http://localhost"</em>
<a class="jxr_linenumber" name="166" href="#166">166</a>         <strong class="jxr_keyword">this</strong>.uri = rawPath + '?' + uri.getRawQuery();
<a class="jxr_linenumber" name="167" href="#167">167</a>         <strong class="jxr_keyword">this</strong>.charset = charset;
<a class="jxr_linenumber" name="168" href="#168">168</a>         <strong class="jxr_keyword">this</strong>.maxParams = maxParams;
<a class="jxr_linenumber" name="169" href="#169">169</a>     }
<a class="jxr_linenumber" name="170" href="#170">170</a> 
<a class="jxr_linenumber" name="171" href="#171">171</a>     <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="172" href="#172">172</a> <em class="jxr_javadoccomment">     * Returns the decoded path string of the URI.</em>
<a class="jxr_linenumber" name="173" href="#173">173</a> <em class="jxr_javadoccomment">     */</em>
<a class="jxr_linenumber" name="174" href="#174">174</a>     <strong class="jxr_keyword">public</strong> String getPath() {
<a class="jxr_linenumber" name="175" href="#175">175</a>         <strong class="jxr_keyword">if</strong> (path == <strong class="jxr_keyword">null</strong>) {
<a class="jxr_linenumber" name="176" href="#176">176</a>             <strong class="jxr_keyword">if</strong> (!hasPath) {
<a class="jxr_linenumber" name="177" href="#177">177</a>                 <strong class="jxr_keyword">return</strong> path = <span class="jxr_string">""</span>;
<a class="jxr_linenumber" name="178" href="#178">178</a>             }
<a class="jxr_linenumber" name="179" href="#179">179</a> 
<a class="jxr_linenumber" name="180" href="#180">180</a>             <strong class="jxr_keyword">int</strong> pathEndPos = uri.indexOf('?');
<a class="jxr_linenumber" name="181" href="#181">181</a>             <strong class="jxr_keyword">if</strong> (pathEndPos &lt; 0) {
<a class="jxr_linenumber" name="182" href="#182">182</a>                 path = uri;
<a class="jxr_linenumber" name="183" href="#183">183</a>             } <strong class="jxr_keyword">else</strong> {
<a class="jxr_linenumber" name="184" href="#184">184</a>                 <strong class="jxr_keyword">return</strong> path = uri.substring(0, pathEndPos);
<a class="jxr_linenumber" name="185" href="#185">185</a>             }
<a class="jxr_linenumber" name="186" href="#186">186</a>         }
<a class="jxr_linenumber" name="187" href="#187">187</a>         <strong class="jxr_keyword">return</strong> path;
<a class="jxr_linenumber" name="188" href="#188">188</a>     }
<a class="jxr_linenumber" name="189" href="#189">189</a> 
<a class="jxr_linenumber" name="190" href="#190">190</a>     <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="191" href="#191">191</a> <em class="jxr_javadoccomment">     * Returns the decoded key-value parameter pairs of the URI.</em>
<a class="jxr_linenumber" name="192" href="#192">192</a> <em class="jxr_javadoccomment">     */</em>
<a class="jxr_linenumber" name="193" href="#193">193</a>     <strong class="jxr_keyword">public</strong> Map&lt;String, List&lt;String&gt;&gt; getParameters() {
<a class="jxr_linenumber" name="194" href="#194">194</a>         <strong class="jxr_keyword">if</strong> (params == <strong class="jxr_keyword">null</strong>) {
<a class="jxr_linenumber" name="195" href="#195">195</a>             <strong class="jxr_keyword">if</strong> (hasPath) {
<a class="jxr_linenumber" name="196" href="#196">196</a>                 <strong class="jxr_keyword">int</strong> pathLength = getPath().length();
<a class="jxr_linenumber" name="197" href="#197">197</a>                 <strong class="jxr_keyword">if</strong> (uri.length() == pathLength) {
<a class="jxr_linenumber" name="198" href="#198">198</a>                     <strong class="jxr_keyword">return</strong> Collections.emptyMap();
<a class="jxr_linenumber" name="199" href="#199">199</a>                 }
<a class="jxr_linenumber" name="200" href="#200">200</a>                 decodeParams(uri.substring(pathLength + 1));
<a class="jxr_linenumber" name="201" href="#201">201</a>             } <strong class="jxr_keyword">else</strong> {
<a class="jxr_linenumber" name="202" href="#202">202</a>                 <strong class="jxr_keyword">if</strong> (uri.length() == 0) {
<a class="jxr_linenumber" name="203" href="#203">203</a>                     <strong class="jxr_keyword">return</strong> Collections.emptyMap();
<a class="jxr_linenumber" name="204" href="#204">204</a>                 }
<a class="jxr_linenumber" name="205" href="#205">205</a>                 decodeParams(uri);
<a class="jxr_linenumber" name="206" href="#206">206</a>             }
<a class="jxr_linenumber" name="207" href="#207">207</a>         }
<a class="jxr_linenumber" name="208" href="#208">208</a>         <strong class="jxr_keyword">return</strong> params;
<a class="jxr_linenumber" name="209" href="#209">209</a>     }
<a class="jxr_linenumber" name="210" href="#210">210</a> 
<a class="jxr_linenumber" name="211" href="#211">211</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">void</strong> decodeParams(String s) {
<a class="jxr_linenumber" name="212" href="#212">212</a>         Map&lt;String, List&lt;String&gt;&gt; params = <strong class="jxr_keyword">this</strong>.params = <strong class="jxr_keyword">new</strong> LinkedHashMap&lt;String, List&lt;String&gt;&gt;();
<a class="jxr_linenumber" name="213" href="#213">213</a>         nParams = 0;
<a class="jxr_linenumber" name="214" href="#214">214</a>         String name = <strong class="jxr_keyword">null</strong>;
<a class="jxr_linenumber" name="215" href="#215">215</a>         <strong class="jxr_keyword">int</strong> pos = 0; <em class="jxr_comment">// Beginning of the unprocessed region</em>
<a class="jxr_linenumber" name="216" href="#216">216</a>         <strong class="jxr_keyword">int</strong> i;       <em class="jxr_comment">// End of the unprocessed region</em>
<a class="jxr_linenumber" name="217" href="#217">217</a>         <strong class="jxr_keyword">char</strong> c;      <em class="jxr_comment">// Current character</em>
<a class="jxr_linenumber" name="218" href="#218">218</a>         <strong class="jxr_keyword">for</strong> (i = 0; i &lt; s.length(); i++) {
<a class="jxr_linenumber" name="219" href="#219">219</a>             c = s.charAt(i);
<a class="jxr_linenumber" name="220" href="#220">220</a>             <strong class="jxr_keyword">if</strong> (c == '=' &amp;&amp; name == <strong class="jxr_keyword">null</strong>) {
<a class="jxr_linenumber" name="221" href="#221">221</a>                 <strong class="jxr_keyword">if</strong> (pos != i) {
<a class="jxr_linenumber" name="222" href="#222">222</a>                     name = decodeComponent(s.substring(pos, i), charset);
<a class="jxr_linenumber" name="223" href="#223">223</a>                 }
<a class="jxr_linenumber" name="224" href="#224">224</a>                 pos = i + 1;
<a class="jxr_linenumber" name="225" href="#225">225</a>             <em class="jxr_comment">// http://www.w3.org/TR/html401/appendix/notes.html#h-B.2.2</em>
<a class="jxr_linenumber" name="226" href="#226">226</a>             } <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> (c == '&amp;' || c == ';') {
<a class="jxr_linenumber" name="227" href="#227">227</a>                 <strong class="jxr_keyword">if</strong> (name == <strong class="jxr_keyword">null</strong> &amp;&amp; pos != i) {
<a class="jxr_linenumber" name="228" href="#228">228</a>                     <em class="jxr_comment">// We haven't seen an `=' so far but moved forward.</em>
<a class="jxr_linenumber" name="229" href="#229">229</a>                     <em class="jxr_comment">// Must be a param of the form '&amp;a&amp;' so add it with</em>
<a class="jxr_linenumber" name="230" href="#230">230</a>                     <em class="jxr_comment">// an empty value.</em>
<a class="jxr_linenumber" name="231" href="#231">231</a>                     <strong class="jxr_keyword">if</strong> (!addParam(params, decodeComponent(s.substring(pos, i), charset), <span class="jxr_string">""</span>)) {
<a class="jxr_linenumber" name="232" href="#232">232</a>                         <strong class="jxr_keyword">return</strong>;
<a class="jxr_linenumber" name="233" href="#233">233</a>                     }
<a class="jxr_linenumber" name="234" href="#234">234</a>                 } <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> (name != <strong class="jxr_keyword">null</strong>) {
<a class="jxr_linenumber" name="235" href="#235">235</a>                     <strong class="jxr_keyword">if</strong> (!addParam(params, name, decodeComponent(s.substring(pos, i), charset))) {
<a class="jxr_linenumber" name="236" href="#236">236</a>                         <strong class="jxr_keyword">return</strong>;
<a class="jxr_linenumber" name="237" href="#237">237</a>                     }
<a class="jxr_linenumber" name="238" href="#238">238</a>                     name = <strong class="jxr_keyword">null</strong>;
<a class="jxr_linenumber" name="239" href="#239">239</a>                 }
<a class="jxr_linenumber" name="240" href="#240">240</a>                 pos = i + 1;
<a class="jxr_linenumber" name="241" href="#241">241</a>             }
<a class="jxr_linenumber" name="242" href="#242">242</a>         }
<a class="jxr_linenumber" name="243" href="#243">243</a> 
<a class="jxr_linenumber" name="244" href="#244">244</a>         <strong class="jxr_keyword">if</strong> (pos != i) {  <em class="jxr_comment">// Are there characters we haven't dealt with?</em>
<a class="jxr_linenumber" name="245" href="#245">245</a>             <strong class="jxr_keyword">if</strong> (name == <strong class="jxr_keyword">null</strong>) {     <em class="jxr_comment">// Yes and we haven't seen any `='.</em>
<a class="jxr_linenumber" name="246" href="#246">246</a>                 addParam(params, decodeComponent(s.substring(pos, i), charset), <span class="jxr_string">""</span>);
<a class="jxr_linenumber" name="247" href="#247">247</a>             } <strong class="jxr_keyword">else</strong> {                <em class="jxr_comment">// Yes and this must be the last value.</em>
<a class="jxr_linenumber" name="248" href="#248">248</a>                 addParam(params, name, decodeComponent(s.substring(pos, i), charset));
<a class="jxr_linenumber" name="249" href="#249">249</a>             }
<a class="jxr_linenumber" name="250" href="#250">250</a>         } <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> (name != <strong class="jxr_keyword">null</strong>) {  <em class="jxr_comment">// Have we seen a name without value?</em>
<a class="jxr_linenumber" name="251" href="#251">251</a>             addParam(params, name, <span class="jxr_string">""</span>);
<a class="jxr_linenumber" name="252" href="#252">252</a>         }
<a class="jxr_linenumber" name="253" href="#253">253</a>     }
<a class="jxr_linenumber" name="254" href="#254">254</a> 
<a class="jxr_linenumber" name="255" href="#255">255</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">boolean</strong> addParam(Map&lt;String, List&lt;String&gt;&gt; params, String name, String value) {
<a class="jxr_linenumber" name="256" href="#256">256</a>         <strong class="jxr_keyword">if</strong> (nParams &gt;= maxParams) {
<a class="jxr_linenumber" name="257" href="#257">257</a>             <strong class="jxr_keyword">return</strong> false;
<a class="jxr_linenumber" name="258" href="#258">258</a>         }
<a class="jxr_linenumber" name="259" href="#259">259</a> 
<a class="jxr_linenumber" name="260" href="#260">260</a>         List&lt;String&gt; values = params.get(name);
<a class="jxr_linenumber" name="261" href="#261">261</a>         <strong class="jxr_keyword">if</strong> (values == <strong class="jxr_keyword">null</strong>) {
<a class="jxr_linenumber" name="262" href="#262">262</a>             values = <strong class="jxr_keyword">new</strong> ArrayList&lt;String&gt;(1);  <em class="jxr_comment">// Often there's only 1 value.</em>
<a class="jxr_linenumber" name="263" href="#263">263</a>             params.put(name, values);
<a class="jxr_linenumber" name="264" href="#264">264</a>         }
<a class="jxr_linenumber" name="265" href="#265">265</a>         values.add(value);
<a class="jxr_linenumber" name="266" href="#266">266</a>         nParams ++;
<a class="jxr_linenumber" name="267" href="#267">267</a>         <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">true</strong>;
<a class="jxr_linenumber" name="268" href="#268">268</a>     }
<a class="jxr_linenumber" name="269" href="#269">269</a> 
<a class="jxr_linenumber" name="270" href="#270">270</a>     <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="271" href="#271">271</a> <em class="jxr_javadoccomment">     * Decodes a bit of an URL encoded by a browser.</em>
<a class="jxr_linenumber" name="272" href="#272">272</a> <em class="jxr_javadoccomment">     * &lt;p&gt;</em>
<a class="jxr_linenumber" name="273" href="#273">273</a> <em class="jxr_javadoccomment">     * This is equivalent to calling {@link #decodeComponent(String, Charset)}</em>
<a class="jxr_linenumber" name="274" href="#274">274</a> <em class="jxr_javadoccomment">     * with the UTF-8 charset (recommended to comply with RFC 3986, Section 2).</em>
<a class="jxr_linenumber" name="275" href="#275">275</a> <em class="jxr_javadoccomment">     * @param s The string to decode (can be empty).</em>
<a class="jxr_linenumber" name="276" href="#276">276</a> <em class="jxr_javadoccomment">     * @return The decoded string, or {@code s} if there's nothing to decode.</em>
<a class="jxr_linenumber" name="277" href="#277">277</a> <em class="jxr_javadoccomment">     * If the string to decode is {@code null}, returns an empty string.</em>
<a class="jxr_linenumber" name="278" href="#278">278</a> <em class="jxr_javadoccomment">     * @throws IllegalArgumentException if the string contains a malformed</em>
<a class="jxr_linenumber" name="279" href="#279">279</a> <em class="jxr_javadoccomment">     * escape sequence.</em>
<a class="jxr_linenumber" name="280" href="#280">280</a> <em class="jxr_javadoccomment">     */</em>
<a class="jxr_linenumber" name="281" href="#281">281</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> String decodeComponent(<strong class="jxr_keyword">final</strong> String s) {
<a class="jxr_linenumber" name="282" href="#282">282</a>         <strong class="jxr_keyword">return</strong> decodeComponent(s, HttpConstants.DEFAULT_CHARSET);
<a class="jxr_linenumber" name="283" href="#283">283</a>     }
<a class="jxr_linenumber" name="284" href="#284">284</a> 
<a class="jxr_linenumber" name="285" href="#285">285</a>     <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="286" href="#286">286</a> <em class="jxr_javadoccomment">     * Decodes a bit of an URL encoded by a browser.</em>
<a class="jxr_linenumber" name="287" href="#287">287</a> <em class="jxr_javadoccomment">     * &lt;p&gt;</em>
<a class="jxr_linenumber" name="288" href="#288">288</a> <em class="jxr_javadoccomment">     * The string is expected to be encoded as per RFC 3986, Section 2.</em>
<a class="jxr_linenumber" name="289" href="#289">289</a> <em class="jxr_javadoccomment">     * This is the encoding used by JavaScript functions {@code encodeURI}</em>
<a class="jxr_linenumber" name="290" href="#290">290</a> <em class="jxr_javadoccomment">     * and {@code encodeURIComponent}, but not {@code escape}.  For example</em>
<a class="jxr_linenumber" name="291" href="#291">291</a> <em class="jxr_javadoccomment">     * in this encoding, &amp;eacute; (in Unicode {@code U+00E9} or in UTF-8</em>
<a class="jxr_linenumber" name="292" href="#292">292</a> <em class="jxr_javadoccomment">     * {@code 0xC3 0xA9}) is encoded as {@code %C3%A9} or {@code %c3%a9}.</em>
<a class="jxr_linenumber" name="293" href="#293">293</a> <em class="jxr_javadoccomment">     * &lt;p&gt;</em>
<a class="jxr_linenumber" name="294" href="#294">294</a> <em class="jxr_javadoccomment">     * This is essentially equivalent to calling</em>
<a class="jxr_linenumber" name="295" href="#295">295</a> <em class="jxr_javadoccomment">     *   {@link URLDecoder#decode(String, String) URLDecoder.decode(s, charset.name())}</em>
<a class="jxr_linenumber" name="296" href="#296">296</a> <em class="jxr_javadoccomment">     * except that it's over 2x faster and generates less garbage for the GC.</em>
<a class="jxr_linenumber" name="297" href="#297">297</a> <em class="jxr_javadoccomment">     * Actually this function doesn't allocate any memory if there's nothing</em>
<a class="jxr_linenumber" name="298" href="#298">298</a> <em class="jxr_javadoccomment">     * to decode, the argument itself is returned.</em>
<a class="jxr_linenumber" name="299" href="#299">299</a> <em class="jxr_javadoccomment">     * @param s The string to decode (can be empty).</em>
<a class="jxr_linenumber" name="300" href="#300">300</a> <em class="jxr_javadoccomment">     * @param charset The charset to use to decode the string (should really</em>
<a class="jxr_linenumber" name="301" href="#301">301</a> <em class="jxr_javadoccomment">     * be {@link CharsetUtil#UTF_8}.</em>
<a class="jxr_linenumber" name="302" href="#302">302</a> <em class="jxr_javadoccomment">     * @return The decoded string, or {@code s} if there's nothing to decode.</em>
<a class="jxr_linenumber" name="303" href="#303">303</a> <em class="jxr_javadoccomment">     * If the string to decode is {@code null}, returns an empty string.</em>
<a class="jxr_linenumber" name="304" href="#304">304</a> <em class="jxr_javadoccomment">     * @throws IllegalArgumentException if the string contains a malformed</em>
<a class="jxr_linenumber" name="305" href="#305">305</a> <em class="jxr_javadoccomment">     * escape sequence.</em>
<a class="jxr_linenumber" name="306" href="#306">306</a> <em class="jxr_javadoccomment">     */</em>
<a class="jxr_linenumber" name="307" href="#307">307</a>     @SuppressWarnings(<span class="jxr_string">"fallthrough"</span>)
<a class="jxr_linenumber" name="308" href="#308">308</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> String decodeComponent(<strong class="jxr_keyword">final</strong> String s,
<a class="jxr_linenumber" name="309" href="#309">309</a>                                          <strong class="jxr_keyword">final</strong> Charset charset) {
<a class="jxr_linenumber" name="310" href="#310">310</a>         <strong class="jxr_keyword">if</strong> (s == <strong class="jxr_keyword">null</strong>) {
<a class="jxr_linenumber" name="311" href="#311">311</a>             <strong class="jxr_keyword">return</strong> <span class="jxr_string">""</span>;
<a class="jxr_linenumber" name="312" href="#312">312</a>         }
<a class="jxr_linenumber" name="313" href="#313">313</a>         <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> size = s.length();
<a class="jxr_linenumber" name="314" href="#314">314</a>         <strong class="jxr_keyword">boolean</strong> modified = false;
<a class="jxr_linenumber" name="315" href="#315">315</a>         <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> i = 0; i &lt; size; i++) {
<a class="jxr_linenumber" name="316" href="#316">316</a>             <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">char</strong> c = s.charAt(i);
<a class="jxr_linenumber" name="317" href="#317">317</a>             <strong class="jxr_keyword">switch</strong> (c) {
<a class="jxr_linenumber" name="318" href="#318">318</a>                 <strong class="jxr_keyword">case</strong> '%':
<a class="jxr_linenumber" name="319" href="#319">319</a>                     i++;  <em class="jxr_comment">// We can skip at least one char, e.g. `%%'.</em>
<a class="jxr_linenumber" name="320" href="#320">320</a>                     <em class="jxr_comment">// Fall through.</em>
<a class="jxr_linenumber" name="321" href="#321">321</a>                 <strong class="jxr_keyword">case</strong> '+':
<a class="jxr_linenumber" name="322" href="#322">322</a>                     modified = <strong class="jxr_keyword">true</strong>;
<a class="jxr_linenumber" name="323" href="#323">323</a>                     <strong class="jxr_keyword">break</strong>;
<a class="jxr_linenumber" name="324" href="#324">324</a>             }
<a class="jxr_linenumber" name="325" href="#325">325</a>         }
<a class="jxr_linenumber" name="326" href="#326">326</a>         <strong class="jxr_keyword">if</strong> (!modified) {
<a class="jxr_linenumber" name="327" href="#327">327</a>             <strong class="jxr_keyword">return</strong> s;
<a class="jxr_linenumber" name="328" href="#328">328</a>         }
<a class="jxr_linenumber" name="329" href="#329">329</a>         <strong class="jxr_keyword">final</strong> byte[] buf = <strong class="jxr_keyword">new</strong> byte[size];
<a class="jxr_linenumber" name="330" href="#330">330</a>         <strong class="jxr_keyword">int</strong> pos = 0;  <em class="jxr_comment">// position in `buf'.</em>
<a class="jxr_linenumber" name="331" href="#331">331</a>         <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> i = 0; i &lt; size; i++) {
<a class="jxr_linenumber" name="332" href="#332">332</a>             <strong class="jxr_keyword">char</strong> c = s.charAt(i);
<a class="jxr_linenumber" name="333" href="#333">333</a>             <strong class="jxr_keyword">switch</strong> (c) {
<a class="jxr_linenumber" name="334" href="#334">334</a>                 <strong class="jxr_keyword">case</strong> '+':
<a class="jxr_linenumber" name="335" href="#335">335</a>                     buf[pos++] = ' ';  <em class="jxr_comment">// "+" -&gt; " "</em>
<a class="jxr_linenumber" name="336" href="#336">336</a>                     <strong class="jxr_keyword">break</strong>;
<a class="jxr_linenumber" name="337" href="#337">337</a>                 <strong class="jxr_keyword">case</strong> '%':
<a class="jxr_linenumber" name="338" href="#338">338</a>                     <strong class="jxr_keyword">if</strong> (i == size - 1) {
<a class="jxr_linenumber" name="339" href="#339">339</a>                         <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalArgumentException(<span class="jxr_string">"unterminated escape"</span>
<a class="jxr_linenumber" name="340" href="#340">340</a>                                 + <span class="jxr_string">" sequence at end of string: "</span> + s);
<a class="jxr_linenumber" name="341" href="#341">341</a>                     }
<a class="jxr_linenumber" name="342" href="#342">342</a>                     c = s.charAt(++i);
<a class="jxr_linenumber" name="343" href="#343">343</a>                     <strong class="jxr_keyword">if</strong> (c == '%') {
<a class="jxr_linenumber" name="344" href="#344">344</a>                         buf[pos++] = '%';  <em class="jxr_comment">// "%%" -&gt; "%"</em>
<a class="jxr_linenumber" name="345" href="#345">345</a>                         <strong class="jxr_keyword">break</strong>;
<a class="jxr_linenumber" name="346" href="#346">346</a>                     }
<a class="jxr_linenumber" name="347" href="#347">347</a> 
<a class="jxr_linenumber" name="348" href="#348">348</a>                     <strong class="jxr_keyword">if</strong> (i == size - 1) {
<a class="jxr_linenumber" name="349" href="#349">349</a>                         <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalArgumentException(<span class="jxr_string">"partial escape"</span>
<a class="jxr_linenumber" name="350" href="#350">350</a>                                 + <span class="jxr_string">" sequence at end of string: "</span> + s);
<a class="jxr_linenumber" name="351" href="#351">351</a>                     }
<a class="jxr_linenumber" name="352" href="#352">352</a>                     c = decodeHexNibble(c);
<a class="jxr_linenumber" name="353" href="#353">353</a>                     <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">char</strong> c2 = decodeHexNibble(s.charAt(++i));
<a class="jxr_linenumber" name="354" href="#354">354</a>                     <strong class="jxr_keyword">if</strong> (c == Character.MAX_VALUE || c2 == Character.MAX_VALUE) {
<a class="jxr_linenumber" name="355" href="#355">355</a>                         <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalArgumentException(
<a class="jxr_linenumber" name="356" href="#356">356</a>                                 <span class="jxr_string">"invalid escape sequence `%"</span> + s.charAt(i - 1)
<a class="jxr_linenumber" name="357" href="#357">357</a>                                 + s.charAt(i) + <span class="jxr_string">"' at index "</span> + (i - 2)
<a class="jxr_linenumber" name="358" href="#358">358</a>                                 + <span class="jxr_string">" of: "</span> + s);
<a class="jxr_linenumber" name="359" href="#359">359</a>                     }
<a class="jxr_linenumber" name="360" href="#360">360</a>                     c = (<strong class="jxr_keyword">char</strong>) (c * 16 + c2);
<a class="jxr_linenumber" name="361" href="#361">361</a>                     <em class="jxr_comment">// Fall through.</em>
<a class="jxr_linenumber" name="362" href="#362">362</a>                 <strong class="jxr_keyword">default</strong>:
<a class="jxr_linenumber" name="363" href="#363">363</a>                     buf[pos++] = (byte) c;
<a class="jxr_linenumber" name="364" href="#364">364</a>                     <strong class="jxr_keyword">break</strong>;
<a class="jxr_linenumber" name="365" href="#365">365</a>             }
<a class="jxr_linenumber" name="366" href="#366">366</a>         }
<a class="jxr_linenumber" name="367" href="#367">367</a>         <strong class="jxr_keyword">try</strong> {
<a class="jxr_linenumber" name="368" href="#368">368</a>             <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">new</strong> String(buf, 0, pos, charset.name());
<a class="jxr_linenumber" name="369" href="#369">369</a>         } <strong class="jxr_keyword">catch</strong> (UnsupportedEncodingException e) {
<a class="jxr_linenumber" name="370" href="#370">370</a>             <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalArgumentException(<span class="jxr_string">"unsupported encoding: "</span> + charset.name(), e);
<a class="jxr_linenumber" name="371" href="#371">371</a>         }
<a class="jxr_linenumber" name="372" href="#372">372</a>     }
<a class="jxr_linenumber" name="373" href="#373">373</a> 
<a class="jxr_linenumber" name="374" href="#374">374</a>     <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="375" href="#375">375</a> <em class="jxr_javadoccomment">     * Helper to decode half of a hexadecimal number from a string.</em>
<a class="jxr_linenumber" name="376" href="#376">376</a> <em class="jxr_javadoccomment">     * @param c The ASCII character of the hexadecimal number to decode.</em>
<a class="jxr_linenumber" name="377" href="#377">377</a> <em class="jxr_javadoccomment">     * Must be in the range {@code [0-9a-fA-F]}.</em>
<a class="jxr_linenumber" name="378" href="#378">378</a> <em class="jxr_javadoccomment">     * @return The hexadecimal value represented in the ASCII character</em>
<a class="jxr_linenumber" name="379" href="#379">379</a> <em class="jxr_javadoccomment">     * given, or {@link Character#MAX_VALUE} if the character is invalid.</em>
<a class="jxr_linenumber" name="380" href="#380">380</a> <em class="jxr_javadoccomment">     */</em>
<a class="jxr_linenumber" name="381" href="#381">381</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">char</strong> decodeHexNibble(<strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">char</strong> c) {
<a class="jxr_linenumber" name="382" href="#382">382</a>         <strong class="jxr_keyword">if</strong> ('0' &lt;= c &amp;&amp; c &lt;= '9') {
<a class="jxr_linenumber" name="383" href="#383">383</a>             <strong class="jxr_keyword">return</strong> (<strong class="jxr_keyword">char</strong>) (c - '0');
<a class="jxr_linenumber" name="384" href="#384">384</a>         } <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> ('a' &lt;= c &amp;&amp; c &lt;= 'f') {
<a class="jxr_linenumber" name="385" href="#385">385</a>             <strong class="jxr_keyword">return</strong> (<strong class="jxr_keyword">char</strong>) (c - 'a' + 10);
<a class="jxr_linenumber" name="386" href="#386">386</a>         } <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> ('A' &lt;= c &amp;&amp; c &lt;= 'F') {
<a class="jxr_linenumber" name="387" href="#387">387</a>             <strong class="jxr_keyword">return</strong> (<strong class="jxr_keyword">char</strong>) (c - 'A' + 10);
<a class="jxr_linenumber" name="388" href="#388">388</a>         } <strong class="jxr_keyword">else</strong> {
<a class="jxr_linenumber" name="389" href="#389">389</a>             <strong class="jxr_keyword">return</strong> Character.MAX_VALUE;
<a class="jxr_linenumber" name="390" href="#390">390</a>         }
<a class="jxr_linenumber" name="391" href="#391">391</a>     }
<a class="jxr_linenumber" name="392" href="#392">392</a> }
</pre>
<hr/><div id="footer">This page was automatically generated by <a href="http://maven.apache.org/">Maven</a></div></body>
</html>

